The pervasive Britney Spears rumor - that she's being held against her will at a mental health institution - and the related campaign to "save" her prompted the pop singer to reassure her fans that "all is well." As #freebritney mania spread from social media to the streets in West Hollywood, Spears surfaced on Instagram to "promise I'm doing what's best at this moment." "My family has been going through a lot of stress and anxiety lately, so I just [...]